Air-brake attachment.



J. W. IAGETT 6: G. F. PENINGTON.

AIR BRAKE ATTACHMENT.

APPL'IGATION rum) APR. 29, 1910.

Patented Feb. 28, 1911.

aw/meson 9%- UNITED STATES" PATENT OFFICE.

JOHN W. PAGETT AND GEORGE E. PENINGTON,

OF CHICKASAWBA, ARKANSAS .AIRBRAKE ATTACHMENT.

Specification of Letters-Batent.

Patented real as, 191-1.

Application filed Apri12i), 1910. Serial No. 552,350.

tion.

PAGETT citizens of the Chlckasawba, in

carried by the trucks and arrangem for engagement by the rails should a truck become derailed. And the invention also consists in certain constructions, arrangements and combinations of the parts that we shall hereinafter fully describe and claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a side elevation of a port-ion of a car illustrating our improved air brake attachment applied thereto; Fig. 2 is a transverse sectional view thereof; and, Fig. 3 is a detail perspective view of one pair of tripping arms and their related parts.

Corresponding and like parts arereterred to in the following description and indicated in all the views of the d same reference characters.

Tu carrying out our invention we secure to the trucks of a car, say to the beam 1 of the truck, hangers 2 of any desired construction and journaled trip arms A in said hangers. In the present embodiment of the invention two of these trip arms are carried by each truck and they embody intermediate horizontally extending journal portions 3, upwardly extending end portions 4: and downwardly extending opposite end portions 5, the extremities of which are and State of Ara.

The object of this invention is an ire turned outwardly, as indicated at 6, so as to assume, in normal position, a slightly ele-' vated relation to the tread su'rfaceofthe subjac ent rails, as clearly illustrated in Fig.

The upwardly extending ends a of the of a cross bar 7,'and connected to the cross bar 7' so that it may be shifted laterally and be positioned in line with the exhaust valve in the train pipe. In the present instance, to secure this lateral a stem a dj ustment application of the brakes throughout which is designed for raivings by the I of the stem 8,. the cross bar 7is formed with a plurality of apertures 9, any

one of which is designed to rece ve a pin or key extending through the stem.

10 designates the emergency exhaust valve. is, it may be opened by valve stem- 11 in either direction and the casing of the valve preferablyembodies a nipple 12 by which it is designed for attachment to a T-joint connected to the train pipe and replacing the ordinary elbow which has heretofore been used. To the stem '11 of the valve a two-way handle 13 is connected, and the opposite ends of this handle are pivotally connected to link rods 14 that are preferably in the form of tubes or pipes so as to combine strength with lightness. These link rods 1% extend in opposite directions and are secured at their outer ends to'thc stems 8' of the different trucks.

From the foregoing description in connection with the accompanying drawing, the operation of our improved. emergency exa, movement of its for will be apparent. So long as the wheels outwardly and laterally extending extremi ties 6 of the actuating arms A will be held in slightly elevated relation to the tread surface of the rails and the exhaust valve 10 will be closed, thetrain pipe being thus in no wise interfered with for the usual "service and emergency applications of the brakes. In the event that any one of the trucks is derailed, it is obvious that one of the trip arms A will be brought into en.- gagement with the tread surface of the rail and the arm will be rocked in one direction or the other according to the direction of travel. but in any event the trip arm will be moved so that it in turn will turn the stem 11 of the valve 10 and open the latter so as l to vent the train pipe and secure an emerarms A are pivotally'connected' to theends" i 8 is adjustably' This valve is a two-way valve, that haust valve and actuating mechanism thereremain properly upon the track rails, the

1 standstill, Within the 'and that the device may be secured in position without any material changes in the truck construction or in the train pipe construotion.

It is to be understood that the exhaust valve 10 may be secured to any portion of the'car framework or foundation. For instance, it may be secured to the cross-over.

- Having'thus described the inventioinwhat is claimed as new is:

' wlth a train pipe,

1. In an air brake system, the combination of an exhaust valve connected thereto, trip arms supported by a said cross bar, and

connecting said stem with the exhaust valve.

truck and embodying upwardly extending portions and downwardly extending tions, the downwardly extending portions being formed with lateral extremities adapted to extend over the track rails normally in elevated relation thereto, a cross bar pivotally connected to the upwardly extending ends of the trip arms, a stem connected to a link rod operatively por- 2. In an air brake system, the combination with a train pipe, of an exhaust valve coned to extend over :tion with a train pipe of a nected thereto, triparms supported by a truck and embodying upwardlyv extending portions and downwardly extending poi" tions, the downwardly extending portions being formed with lateralextremities adaptthe track rails normally thereto, across bar pivthe upper ends of the trip arms, a stem having a laterally adjustable connection with said cross bar, and a link rod operatively connecting said stem with the exhaust valve.

3. Inan air brake'system,'the combinaoar, and the trucks. of the car, of an exhaust valve connected to the train pipe, a pair of trip arms supported by each truck and including upwardly extending ends and downwardly extending ends, the latter being formed with lateral extremities adapted toproject over and above the tread surface of the track rails, cross bars pivotally connecting the up per ends of the respective pairs of arms, stems connected to said cross bars, and link in elevated relation otally connected to .rods operatively connecting said stems to the exhaust valve.

In testimony whereof, we aifix our signatures in presence of two witnesses.

JOHN W., PAGETT. [1]. 8-] GEORGE 1*. PENINGTONJ [In 8.] Witnesses RICHARD Enennxn, VIcroR VIRGILIE. 

